Magnetic toy



Jan. 30, 1934. w SAUER 1,945,383

' MAGNETIC TOY Filed March 24, 1952 Patented Jan. 30, 1934 UNlTED STATES PATENT OFFICE MAGNETIC TOY a corporation of Ohio Application March 24, 1932. Serial No. 600,939

3 Claims.

This invention relates to a magnetic toy and particularly to such a toy having in many respects the external appearance and general function of a magnetic device such as might be used for handling scrap iron or the like.

Among the objects of the invention is the provision of a small size electric lifting magnet simulating those employed for handling scrap iron and analogous purposes and specially constructed and adapted for small size and for the use of alternating current. Other objects will become apparent as the specification proceeds.

Referring now to the drawing, Fig. l is an enlarged elevation of the lifting magnet; Fig. 2 is an enlarged plan thereof; Fig. 3 is a bottom plan thereof; and Fig. 4 is a section on the line 4-4 of Fig. 1.

This magnet consists essentially of a generally cup-shaped shell composed of magnetic material, such as iron. The upper surface, which is most clearly shown in Fig. 9, is made to simulate the standard heavy duty lifting magnet such as is used in large size machines for handling scrap iron and the like. It includes three pairs of projections 97 adapted for connection of chains 98 and a pair of connectors 99 adapted to receive conductors for supplying current to the coil 100. Extending from the upper generally flat wall are a generally cylindrical flange 101 and a central cylindrical projection 102. The flange 101 is slotted or notched as at 103 and the central projection 102 is kerfed as indicated at 104. This is to provide against undesirable effects of eddy currents due to the use of alternating current. Substantially filling the space between the flange 101 and the projection 102 is the coil 100 which is suitably insulated by a covering 105. Covering the coil 100 is a flat protecting ring 106, composed of non-magnetic material, which further insulates the coil and protects the same against abrasion and other undesirable influences, such as dust and moisture. The member 106 may be composed of suitably impregnated fabric or fiber or may be a sheet of brass or similar non-magnetic material soldered or otherwise secured to the shell.

Having thus described my invention, what I claim is:

1. In a toy of the class described, an electro magnet comprising a generally cup-shaped shell composed of magnetic material and having a central projection therein, said shell being provided with a plurality of slots and said central projection being kerfed, and a coil surrounding said central projection and within said shell.

2. In a toy of the class described, an electromagnet comprising a one piece, generally cupshaped shell composed of magnetic material and having a central, integral projection therein, said shell being provided with a plurality of slots and said central projection being kerfed, and a coil surrounding said central projection and within said shell.

3. In a magnetic toy of the class described, a

lifting magnet comprising a one piece, generally cup-shaped shell having a plurality of slots in the flange thereof and a central, integral, kerfed projection therein having its kerf in alignment with one of said slots, a coil within said shell and surrounding said projection, said shell and said projection being composed entirely of magnetic material and non-magnetic material covering said coil and the space between said projection and said flange.

HENRY W. SAUER. 

